2121357996600 has 96 divisors (see below), whose sum is σ = 6684016622640. Its totient is φ = 556421760000.

The previous prime is 2121357996599. The next prime is 2121357996601. The reversal of 2121357996600 is 66997531212.

It is an interprime number because it is at equal distance from previous prime (2121357996599) and next prime (2121357996601).

It is a super-2 number, since 2×2121357996600² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121357996601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28943701 + ... + 29016900.

Almost surely, 2^{2121357996600} is an apocalyptic number.

2121357996600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121357996600 is an abundant number, since it is smaller than the sum of its proper divisors (4562658626040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121357996600 is a wasteful number, since it uses less digits than its factorization.

2121357996600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57960681 (or 57960672 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 51.

The spelling of 2121357996600 in words is "two trillion, one hundred twenty-one billion, three hundred fifty-seven million, nine hundred ninety-six thousand, six hundred".